I broke up with my ex boyfriend and I still care/love him but he hates me. What do I do because I want him in my life?

I broke up with my boyfriend after been together for almost three years. We broke up because I was going to uni and that caused many arguments. However, I am no longer going to uni and although i've tried to speak to him he does not want to hear it or talk to me but I still love and care about him. I'm unsure if I want to be in a relasionship with him but I know that I want him in my life. I cannot seem to move on although i've had oppertunites. I cannot even bring myself to kiss anyone else. What is wrong with me? What do I do?